WO2014020999A1 - Flat cable - Google Patents
Flat cable Download PDFInfo
- Publication number
- WO2014020999A1 WO2014020999A1 PCT/JP2013/066211 JP2013066211W WO2014020999A1 WO 2014020999 A1 WO2014020999 A1 WO 2014020999A1 JP 2013066211 W JP2013066211 W JP 2013066211W WO 2014020999 A1 WO2014020999 A1 WO 2014020999A1
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- WO
- WIPO (PCT)
- Prior art keywords
- signal line
- ground conductor
- opening
- axis direction
- flat cable
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/08—Microstrips; Strip lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
- H01P3/08—Microstrips; Strip lines
- H01P3/085—Triplate lines
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0807—Twin conductor or cable
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/0242—Structural details of individual signal conductors, e.g. related to the skin effect
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/025—Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance
- H05K1/0253—Impedance adaptations of transmission lines by special lay-out of power planes, e.g. providing openings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0277—Bendability or stretchability details
- H05K1/028—Bending or folding regions of flexible printed circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
- H05K1/0221—Coaxially shielded signal lines comprising a continuous shielding layer partially or wholly surrounding the signal lines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0224—Patterned shielding planes, ground planes or power planes
- H05K1/0225—Single or multiple openings in a shielding, ground or power plane
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/05—Flexible printed circuits [FPCs]
- H05K2201/055—Folded back on itself
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/095—Conductive through-holes or vias
- H05K2201/09618—Via fence, i.e. one-dimensional array of vias
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/0969—Apertured conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09727—Varying width along a single conductor; Conductors or pads having different widths
Definitions
- the present invention relates to a flat cable, and more particularly to a flat cable used for transmission of a high-frequency signal.
- a high-frequency signal line described in Patent Document 1 is known as an invention related to a conventional flat cable.
- the high-frequency signal line includes a dielectric element body, a signal line, and two ground conductors.
- the dielectric body is configured by laminating a plurality of dielectric sheets.
- the signal line is provided in the dielectric body.
- the two ground conductors sandwich the signal line from the stacking direction in the dielectric body.
- the signal line and the two ground conductors form a stripline structure.
- each of the two ground conductors is provided with a plurality of openings that overlap with the signal lines when viewed in plan from the stacking direction. This makes it difficult to form a capacitor between the signal line and the two ground conductors. Therefore, the distance between the signal line and the ground conductor in the stacking direction can be reduced, and the high-frequency signal line can be thinned.
- the high-frequency signal line described in Patent Document 1 has a problem that the characteristic impedance of the signal line may fluctuate. More specifically, the high-frequency signal line described in Patent Document 1 is used by being attached to a metal body such as a battery pack. At this time, if openings are formed in both ground conductors, the signal line and the battery pack face each other through the opening, regardless of which surface of the high-frequency signal line faces the battery pack. For this reason, a capacitance is formed between the signal line and the battery pack, and the characteristic impedance of the signal line fluctuates.
- Patent Document 2 also describes a signal line having a stripline structure. Also in the signal line, since the two ground conductors are provided with openings, there is a problem of variation in characteristic impedance of the signal line.
- an object of the present invention is to provide a flat cable that can be thinned and can suppress fluctuations in characteristic impedance.
- a flat cable includes a dielectric element body in which a plurality of dielectric layers are laminated, a linear signal line provided in the dielectric element body, and a laminate layered more than the signal line.
- a first ground conductor provided on one side of the direction, the first ground conductor provided with a plurality of first openings arranged along the signal line, and a stacking direction from the signal line
- a second ground conductor provided with a plurality of second openings arranged along the signal line, wherein the first ground conductor is provided on the other side of the first ground conductor.
- the distance in the stacking direction between the ground conductor and the signal line is larger than the distance in the stacking direction between the second ground conductor and the signal line, and the size of the first opening is the size of the second opening. Smaller than size, specially To.
- FIG. 1 is an external perspective view of a flat cable according to an embodiment of the present invention. It is an exploded view of the dielectric body of the flat cable of FIG. It is the figure which planarly viewed the signal track
- FIG. 4A is a cross-sectional structural view taken along the line AA of the flat cable of FIG.
- FIG. 4B is a sectional structural view taken along the line BB of the flat cable of FIG. It is the external appearance perspective view and sectional structure figure of the connector of a flat cable. It is the figure which planarly viewed the electronic device using the flat cable from the y-axis direction and the z-axis direction.
- FIG. 1 is an external perspective view of a flat cable 10 according to an embodiment of the present invention.
- FIG. 2 is an exploded view of the dielectric body 12 of the flat cable 10 of FIG.
- FIG. 3 is a plan view of the signal line 20, the reference ground conductor 22, and the auxiliary ground conductor 24 of the flat cable 10 from the lamination direction.
- FIG. 4A is a cross-sectional view taken along the line AA of the flat cable 10 of FIG.
- FIG. 4B is a sectional structural view taken along the line BB of the flat cable 10 of FIG.
- the stacking direction of the flat cable 10 is defined as the z-axis direction.
- the longitudinal direction of the flat cable 10 is defined as the x-axis direction, and the direction orthogonal to the x-axis direction and the z-axis direction is defined as the y-axis direction.
- the flat cable 10 is used for connecting two high-frequency circuits in an electronic device such as a mobile phone. As shown in FIGS. 1 and 2, the flat cable 10 includes a dielectric body 12, external terminals 16a and 16b, a signal line 20, a reference ground conductor 22, an auxiliary ground conductor 24, and via-hole conductors b1, b2, and B1 to B4. And connectors 100a and 100b.
- the dielectric body 12 is a flexible plate-like member that extends in the x-axis direction when viewed in plan from the z-axis direction, and includes a line portion 12 a, a connection portion 12 b, 12c is included.
- the dielectric body 12 is a laminated body in which a protective layer 14 and dielectric sheets 18a to 18c are laminated in this order from the positive side in the z-axis direction to the negative side. is there.
- the main surface on the positive side in the z-axis direction of the dielectric body 12 is referred to as the front surface
- the main surface on the negative direction side in the z-axis direction of the dielectric body 12 is referred to as the back surface.
- the line portion 12a extends in the x-axis direction.
- the connecting portions 12b and 12c are respectively connected to the negative end portion in the x-axis direction and the positive end portion in the x-axis direction of the line portion 12a, and have a rectangular shape.
- the widths of the connecting portions 12b and 12c in the y-axis direction are wider than the width of the line portion 12a in the y-axis direction.
- the dielectric sheets 18a to 18c extend in the x-axis direction when viewed in plan from the z-axis method, and have the same shape as the dielectric body 12.
- the dielectric sheets 18a to 18c are made of flexible thermoplastic resin such as polyimide or liquid crystal polymer.
- the thickness T1 of the dielectric sheet 18a is larger than the thickness T2 of the dielectric sheet 18b.
- the thickness T1 is, for example, 50 to 300 ⁇ m. In the present embodiment, the thickness T1 is 100 ⁇ m.
- the thickness T2 is, for example, 10 to 100 ⁇ m. In the present embodiment, the thickness T2 is 50 ⁇ m.
- the dielectric sheet 18a includes a line portion 18a-a and connection portions 18a-b and 18a-c.
- the dielectric sheet 18b includes a line portion 18b-a and connection portions 18b-b and 18b-c.
- the dielectric sheet 18c includes a line portion 18c-a and connection portions 18c-b and 18c-c.
- the line portions 18a-a, 18b-a, and 18c-a constitute the line portion 12a.
- the connecting portions 18a-b, 18b-b, and 18c-b constitute a connecting portion 12b.
- the connecting portions 18a-c, 18b-c, and 18c-c constitute a connecting portion 12c.
- the signal line 20 is a linear conductor that transmits a high-frequency signal and is provided in the dielectric element body 12.
- the signal line 20 is formed on the surface of the dielectric sheet 18b.
- the signal line 20 extends in the x-axis direction in the line portion 18b-a.
- the end of the signal line 20 on the negative direction side in the x-axis direction is located at the approximate center of the connection portion 18b-b.
- the end of the signal line 20 on the positive side in the x-axis direction is located at the approximate center of the connection portion 18b-c.
- a high frequency signal is transmitted to the signal line 20.
- the line width W0 (see FIG. 3) of the signal line 20 is, for example, 300 ⁇ m to 700 ⁇ m.
- the line width of the signal line 20 is 300 ⁇ m.
- the signal line 20 is made of a metal material having a small specific resistance mainly composed of silver or copper.
- the signal line 20 is formed on the surface of the dielectric sheet 18b means that the signal line 20 is formed by patterning a metal foil formed by plating on the surface of the dielectric sheet 18b, It means that the signal line 20 is formed by patterning the metal foil attached to the surface of the dielectric sheet 18b.
- the surface roughness of the surface where the signal line 20 is in contact with the dielectric sheet 18b is the surface roughness of the surface where the signal line 20 is not in contact with the dielectric sheet 18b. It becomes larger than the roughness.
- the reference ground conductor 22 is provided on the positive side in the z-axis direction with respect to the signal line 20.
- the reference ground conductor 22 is provided with a plurality of openings 29 arranged along the signal line 20. More specifically, the reference ground conductor 22 is formed on the surface of the dielectric sheet 18a and faces the signal line 20 through the dielectric sheet 18a.
- the reference ground conductor 22 is made of a metal material having a small specific resistance mainly composed of silver or copper.
- the reference ground conductor 22 is formed on the surface of the dielectric sheet 18a. That is, the reference ground conductor 22 is formed by patterning a metal foil formed by plating on the surface of the dielectric sheet 18a.
- the reference ground conductor 22 is formed by patterning the metal foil attached to the surface of the dielectric sheet 18a. Further, since the surface of the reference ground conductor 22 is smoothed, the surface roughness of the surface where the reference ground conductor 22 is in contact with the dielectric sheet 18a is not in contact with the dielectric sheet 18a. It becomes larger than the surface roughness of the surface.
- the reference ground conductor 22 includes a line portion 22a and terminal portions 22b and 22c.
- the line portion 22a is provided on the surface of the line portion 18a-a and extends in the x-axis direction.
- the terminal portion 22b is provided on the surface of the line portion 18a-b and forms a rectangular ring.
- the terminal portion 22b is connected to the end portion on the negative direction side in the x-axis direction of the line portion 22a.
- the terminal portion 22c is provided on the surface of the line portion 18a-c and forms a rectangular ring.
- the terminal portion 22c is connected to the end portion on the positive direction side in the x-axis direction of the line portion 22a.
- the line portion 22a is provided with a plurality of openings 29 having a rectangular shape extending in the x-axis direction. Accordingly, the reference ground conductor 22 in the line portion 22a has a ladder shape. In the reference ground conductor 22, a portion sandwiched between adjacent openings 29 is referred to as a bridge portion 59.
- the plurality of openings 29 and the plurality of bridge portions 59 alternately overlap the signal line 20 when viewed in plan from the z-axis direction.
- the signal line 20 crosses the approximate center in the y-axis direction of the opening 29 and the bridge portion 59 in the x-axis direction.
- the auxiliary ground conductor 24 is provided on the negative direction side in the z-axis direction from the signal line 20.
- the auxiliary ground conductor 24 is provided with a plurality of openings 30 arranged along the signal line 20. More specifically, the auxiliary ground conductor 24 is formed on the surface of the dielectric sheet 18c and faces the signal line 20 through the dielectric sheet 18b.
- the auxiliary ground conductor 24 is made of a metal material having a small specific resistance mainly composed of silver or copper.
- the auxiliary ground conductor 24 is formed on the surface of the dielectric sheet 18c means that the auxiliary ground conductor 24 is formed by patterning a metal foil formed by plating on the surface of the dielectric sheet 18c.
- the auxiliary ground conductor 24 is formed by patterning a metal foil attached to the surface of the dielectric sheet 18c. Further, since the surface of the auxiliary ground conductor 24 is smoothed, the surface roughness of the surface where the auxiliary ground conductor 24 is in contact with the dielectric sheet 18c is not in contact with the dielectric sheet 18c. It becomes larger than the surface roughness of the surface.
- the auxiliary ground conductor 24 includes a line portion 24a and terminal portions 24b and 24c.
- the line portion 24a is provided on the surface of the line portion 18c-a and extends in the x-axis direction.
- the terminal portion 24b is provided on the surface of the line portion 18c-b and forms a rectangular ring.
- the terminal portion 24b is connected to the end portion on the negative direction side in the x-axis direction of the line portion 24a.
- the terminal portion 24c is provided on the surface of the line portion 18c-c and forms a rectangular ring.
- the terminal portion 24c is connected to the end portion on the positive direction side in the x-axis direction of the line portion 24a.
- the line portion 24a is provided with a plurality of openings 30 having a rectangular shape extending in the x-axis direction.
- the auxiliary ground conductor 24 in the line portion 24a has a ladder shape.
- a portion of the auxiliary ground conductor 24 sandwiched between adjacent openings 30 is referred to as a bridge portion 60.
- the bridge part 60 extends in the y-axis direction.
- the plurality of openings 30 and the plurality of bridge portions 60 alternately overlap the signal line 20 when viewed in plan from the z-axis direction.
- the signal line 20 crosses the approximate center in the y-axis direction of the opening 30 and the bridge portion 60 in the x-axis direction.
- the opening 29 overlaps the opening 30.
- the size of the opening 29 is smaller than the size of the opening 30.
- the width W1 of the opening 29 in the y-axis direction orthogonal to the direction (x-axis direction) in which the signal line 20 extends is smaller than the width W2 of the opening 30 in the y-axis direction.
- the width W1 of the opening 29 is, for example, 500 ⁇ m to 900 ⁇ m.
- the width W2 of the opening 30 is, for example, 1000 ⁇ m to 2000 ⁇ m.
- the length L1 of the opening 29 in the x-axis direction is shorter than the length L2 of the opening 30 in the x-axis direction.
- the length L1 of the opening 29 is, for example, 2 mm to 7 mm.
- the length L2 of the opening 30 is, for example, 2 mm to 7 mm.
- the opening 29 is within the opening 30 when viewed in plan from the z-axis direction. Thereby, the outer edge of the opening 29 and the outer edge of the opening 30 do not overlap when viewed in plan from the z-axis direction.
- the bridge portion 60 overlaps the bridge portion 59.
- the line width W3 of the bridge portion 59 is larger than the line width W4 of the bridge portion 60.
- the line width W3 of the bridge part 59 is, for example, 50 ⁇ m to 200 ⁇ m.
- the line width W4 of the bridge unit 60 is, for example, 50 ⁇ m to 200 ⁇ m.
- the external terminal 16a is a rectangular conductor formed in the center on the surface of the connecting portion 18a-b, as shown in FIGS. Therefore, the external terminal 16a overlaps the end of the signal line 20 on the negative direction side in the x-axis direction when viewed in plan from the z-axis direction.
- the external terminal 16b is a rectangular conductor formed at the center on the surface of the connecting portion 18a-c. Therefore, the external terminal 16b overlaps the end of the signal line 20 on the positive direction side in the x-axis direction when viewed in plan from the z-axis direction.
- the external terminals 16a and 16b are made of a metal material having a small specific resistance mainly composed of silver or copper.
- Ni / Au plating is applied to the surfaces of the external terminals 16a and 16b.
- the external terminals 16a and 16b are formed on the surface of the dielectric sheet 18a.
- the metal foil formed by plating on the surface of the dielectric sheet 18a is patterned to form the external terminals 16a and 16b. It indicates that the external terminals 16a and 16b are formed by patterning the metal foil attached to the surface of the dielectric sheet 18a. Since the surfaces of the external terminals 16a and 16b are smoothed, the surface roughness of the surface where the external terminals 16a and 16b are in contact with the dielectric sheet 18a is the same as that of the external terminals 16a and 16b. It becomes larger than the surface roughness of the non-contact surface.
- the signal line 20 is sandwiched between the reference ground conductor 22 and the auxiliary ground conductor 24 from the z-axis direction. That is, the signal line 20, the reference ground conductor 22, and the auxiliary ground conductor 24 have a triplate type stripline structure. Further, the distance (distance in the z-axis direction) between the signal line 20 and the reference ground conductor 22 is substantially equal to the thickness T1 of the dielectric sheet 18a as shown in FIG. 4, and is, for example, 50 ⁇ m to 300 ⁇ m. In the present embodiment, the distance between the signal line 20 and the reference ground conductor 22 is 100 ⁇ m.
- the distance (distance in the z-axis direction) between the signal line 20 and the auxiliary ground conductor 24 is substantially equal to the thickness T2 of the dielectric sheet 18b as shown in FIG. 4, for example, 10 ⁇ m to 100 ⁇ m.
- the distance between the signal line 20 and the auxiliary ground conductor 24 is 50 ⁇ m. That is, the distance in the z-axis direction between the reference ground conductor 22 and the signal line 20 is designed to be larger than the distance in the z-axis direction between the auxiliary ground conductor 24 and the signal line 20.
- the via-hole conductor b1 passes through the connecting portion 18a-b of the dielectric sheet 18a in the z-axis direction, and connects the external terminal 16a and the end of the signal line 20 on the negative direction side in the x-axis direction.
- the via-hole conductor b2 passes through the connection portion 18a-c of the dielectric sheet 18a in the z-axis direction, and connects the external terminal 16b and the end portion of the signal line 20 on the positive direction side in the x-axis direction. Thereby, the signal line 20 is connected between the external terminals 16a and 16b.
- the via-hole conductors b1 and b2 are formed by filling a metal material in a through hole formed in the dielectric sheet 18a.
- the plurality of via-hole conductors B1 penetrates the line portion 18a-a of the dielectric sheet 18a in the z-axis direction. As shown in FIG. 2, the plurality of via-hole conductors B1 are provided on the positive side in the y-axis direction from the bridge portions 59 and 60, and are arranged in a line in the x-axis direction. The plurality of via-hole conductors B2 penetrates the line portion 18b-a of the dielectric sheet 18b in the z-axis direction. As shown in FIG.
- the plurality of via-hole conductors B ⁇ b> 2 are provided on the positive direction side in the y-axis direction from the bridge portions 59 and 60, and are arranged in a line in the x-axis direction.
- the via-hole conductor B1 and the via-hole conductor B2 constitute a single via-hole conductor by being connected to each other, and connect the reference ground conductor 22 and the auxiliary ground conductor 24.
- the via-hole conductors B1 and B2 are formed by filling a metal material in through holes formed in the dielectric sheets 18a and 18b.
- the plurality of via-hole conductors B3 penetrates the line portion 18a-a of the dielectric sheet 18a in the z-axis direction. As shown in FIG. 2, the plurality of via-hole conductors B3 are provided on the negative side in the y-axis direction from the bridge portions 59 and 60, and are arranged in a line in the x-axis direction.
- the plurality of via-hole conductors B4 penetrate the line portion 18b-a of the dielectric sheet 18b in the z-axis direction. As shown in FIG. 2, the plurality of via-hole conductors B4 are provided on the negative direction side in the y-axis direction from the bridge portions 59 and 60, and are arranged in a line in the x-axis direction.
- the via-hole conductor B3 and the via-hole conductor B4 constitute one via-hole conductor by being connected to each other, and connect the reference ground conductor 22 and the auxiliary ground conductor 24.
- the via-hole conductors B3 and B4 are formed by filling a metal material in through holes formed in the dielectric sheets 18a and 18b.
- the protective layer 14 is an insulating film that covers substantially the entire surface of the dielectric sheet 18a. Thereby, the protective layer 14 covers the reference ground conductor 22.
- the protective layer 14 is made of a flexible resin such as a resist material, for example.
- the protective layer 14 includes a line portion 14a and connecting portions 14b and 14c.
- the line portion 14a covers the line portion 22a by covering the entire surface of the line portion 18a-a.
- the connecting portion 14b is connected to the end portion on the negative side in the x-axis direction of the line portion 14a and covers the surface of the connecting portion 18a-b.
- openings Ha to Hd are provided in the connection portion 14b.
- the opening Ha is a rectangular opening provided in the center of the connection portion 14b.
- the external terminal 16a is exposed to the outside through the opening Ha.
- the opening Hb is a rectangular opening provided on the positive side in the y-axis direction with respect to the opening Ha.
- the opening Hc is a rectangular opening provided on the negative direction side in the x-axis direction from the opening Ha.
- the opening Hd is a rectangular opening provided on the negative side in the y-axis direction with respect to the opening Ha.
- the terminal portion 22b functions as an external terminal by being exposed to the outside through the openings Hb to Hd.
- the connecting portion 14c is connected to the end portion on the positive side in the x-axis direction of the line portion 14a and covers the surface of the connecting portion 18a-c.
- openings He to Hh are provided in the connection portion 14c.
- the opening He is a rectangular opening provided in the center of the connection portion 14c.
- the external terminal 16b is exposed to the outside through the opening He.
- the opening Hf is a rectangular opening provided on the positive direction side in the y-axis direction with respect to the opening He.
- the opening Hg is a rectangular opening provided closer to the positive direction side in the x-axis direction than the opening He.
- the opening Hh is a rectangular opening provided on the negative side in the y-axis direction with respect to the opening He.
- the terminal portion 22c functions as an external terminal by being exposed to the outside through the openings Hf to Hh.
- the characteristic impedance of the signal line 20 periodically varies between the impedance Z1 and the impedance Z2. More specifically, a portion of the signal line 20 that overlaps the openings 29 and 30 has a relatively small capacitance between the signal line 20, the reference ground conductor 22, and the auxiliary ground conductor 24. Therefore, the characteristic impedance of the portion overlapping the openings 29 and 30 in the signal line 20 becomes a relatively high impedance Z1.
- the characteristic impedance of the portion of the signal line 20 that overlaps the bridge portions 59 and 60 is a relatively low impedance Z2.
- the openings 29 and the bridge portions 59 are alternately arranged in the x-axis direction, and the openings 30 and the bridge portions 60 are alternately arranged in the x-axis direction. Therefore, the characteristic impedance of the signal line 20 periodically varies between the impedance Z1 and the impedance Z2.
- the impedance Z1 is, for example, 55 ⁇
- the impedance Z2 is, for example, 45 ⁇ .
- the average characteristic impedance of the entire signal line 20 is, for example, 50 ⁇ .
- FIG. 5 is an external perspective view and a cross-sectional structure diagram of the connector 100 b of the flat cable 10.
- the connector 100b includes a connector main body 102, external terminals 104 and 106, a central conductor 108, and an external conductor 110 as shown in FIGS.
- the connector main body 102 has a shape in which a cylindrical member is connected to a rectangular plate member, and is made of an insulating material such as a resin.
- the external terminal 104 is provided at a position facing the external terminal 16b on the negative side surface in the z-axis direction of the plate member of the connector main body 102.
- the external terminal 106 is provided at a position corresponding to the terminal portion 22c exposed through the openings Hf to Hh on the negative surface side in the z-axis direction of the plate member of the connector main body 102.
- the center conductor 108 is provided at the center of the cylindrical member of the connector main body 102 and is connected to the external terminal 104.
- the center conductor 108 is a signal terminal for inputting or outputting a high frequency signal.
- the external conductor 110 is provided on the inner peripheral surface of the cylindrical member of the connector main body 102 and is connected to the external terminal 106.
- the outer conductor 110 is a ground terminal that is maintained at a ground potential.
- the connector 100b configured as described above is formed on the surface of the connection portion 12c so that the external terminal 104 is connected to the external terminal 16b and the external terminal 106 is connected to the terminal portion 22c.
- the signal line 20 is electrically connected to the central conductor 108.
- the reference ground conductor 22 and the auxiliary ground conductor 24 are electrically connected to the external conductor 110.
- the connectors 100a and 100b are not necessarily provided. That is, external connection electrodes such as the external terminals 104 and 106 may be provided on the surfaces of the connection portions 12b and 12c, and the external connection electrodes may be connected to the outside via the external connection electrodes.
- FIG. 6 is a plan view of the electronic device 200 using the flat cable 10 from the y-axis direction and the z-axis direction.
- the electronic device 200 includes a flat cable 10, circuit boards 202a and 202b, receptacles 204a and 204b, a battery pack (metal body) 206, and a casing 210.
- the circuit board 202a is provided with a transmission circuit or a reception circuit including an antenna, for example.
- a power supply circuit is provided on the circuit board 202b.
- the battery pack 206 is a lithium ion secondary battery, for example, and has a structure in which the surface is covered with a metal cover.
- the circuit board 202a, the battery pack 206, and the circuit board 202b are arranged in this order from the negative direction side to the positive direction side in the x-axis direction.
- the receptacles 204a and 204b are provided on the main surfaces of the circuit boards 202a and 202b on the negative side in the z-axis direction, respectively.
- Connectors 100a and 100b are connected to receptacles 204a and 204b, respectively.
- a high frequency signal having a frequency of, for example, 2 GHz transmitted between the circuit boards 202a and 202b is applied to the central conductor 108 of the connectors 100a and 100b via the receptacles 204a and 204b.
- the external conductor 110 of the connectors 100a and 100b is kept at the ground potential via the circuit boards 202a and 202b and the receptacles 204a and 204b.
- the flat cable 10 connects between the circuit boards 202a and 202b.
- the surface of the dielectric body 12 (more precisely, the protective layer 14) is in contact with the battery pack 206.
- the dielectric body 12 and the battery pack 206 are fixed with an adhesive or the like.
- the surface of the dielectric body 12 is a main surface located on the reference ground conductor 22 side with respect to the signal line 20. Therefore, between the signal line 20 and the battery pack 206, the reference ground conductor 22 provided with an opening 29 having a relatively small size is located.
- the circuit boards 202a and 202b are connected by connecting the connectors 100a and 100b and the receptacles 204a and 204b.
- the external connection electrode of the flat cable and the land electrodes of the circuit boards 202a and 202b may be connected with a conductive material or the like without providing a connector.
- dielectric sheets 18a to 18c made of a thermoplastic resin having a copper foil (metal film) formed on the entire surface are prepared. Specifically, copper foil is attached to the surfaces of the dielectric sheets 18a to 18c. Further, the surface of the copper foil of the dielectric sheets 18a to 18c is smoothed by applying, for example, zinc plating for rust prevention.
- the dielectric sheets 18a to 18c are liquid crystal polymers. The thickness of the copper foil is 10 ⁇ m to 20 ⁇ m.
- the external terminals 16a and 16b and the reference ground conductor 22 shown in FIG. 2 are formed on the surface of the dielectric sheet 18a.
- a resist having the same shape as the external terminals 16a and 16b and the reference ground conductor 22 shown in FIG. 2 is printed on the copper foil on the surface of the dielectric sheet 18a.
- the copper foil of the part which is not covered with the resist is removed by performing an etching process with respect to copper foil. Thereafter, a resist solution is sprayed to remove the resist.
- the external terminals 16a and 16b and the reference ground conductor 22 as shown in FIG. 2 are formed on the surface of the dielectric sheet 18a by a photolithography process.
- the signal line 20 shown in FIG. 2 is formed on the surface of the dielectric sheet 18b. Further, the auxiliary ground conductor 24 shown in FIG. 2 is formed on the surface of the dielectric sheet 18c. In addition, since the formation process of the signal line 20 and the auxiliary ground conductor 24 is the same as the formation process of the external terminals 16a and 16b and the reference ground conductor 22, the description thereof is omitted.
- a through hole is formed by irradiating a laser beam to a position where the via hole conductors b1, b2, B1 to B4 of the dielectric sheets 18a and 18b are formed. Then, the through holes are filled with a conductive paste to form via-hole conductors b1, b2, B1 to B4.
- interlayer connection of the dielectric sheet 18a may be made by forming a through-hole conductor in the through hole by a method such as plating.
- the dielectric sheets 18a to 18c are stacked in this order from the positive direction side in the z-axis direction to the negative direction side to form the dielectric element body 12. Then, the dielectric sheets 18a to 18c are integrated by applying heat and pressure to the dielectric sheets 18a to 18c from the positive and negative directions in the z-axis direction.
- a protective layer 14 covering the reference ground conductor 22 is formed on the surface of the dielectric sheet 18a by applying a resin (resist) paste by screen printing.
- the connectors 100a and 100b are mounted on the external terminals 16a and 16b on the connection parts 12b and 12c and the terminal parts 22b and 22c by using solder. Thereby, the flat cable 10 shown in FIG. 1 is obtained.
- the reference ground conductor 22 is provided with an opening 29, and the auxiliary ground conductor 24 is provided with an opening 30.
- the capacitance formed between the auxiliary ground conductor 24 and the auxiliary ground conductor 24 does not become too large.
- the characteristic impedance of the signal line 20 it becomes easy to adjust the characteristic impedance of the signal line 20 to a predetermined characteristic impedance (for example, 50 ⁇ ).
- a predetermined characteristic impedance for example, 50 ⁇ .
- the flat cable 10 it is possible to reduce the thickness while maintaining the characteristic impedance of the signal line 20 at a predetermined characteristic impedance.
- the size of the opening 29 is smaller than the size of the opening 30.
- the width W1 of the opening 29 is smaller than the width W2 of the opening 30, and the length L1 of the opening 29 is shorter than the length L2 of the opening 30. Therefore, the surface of the flat cable 10 is attached to the battery pack 206.
- the surface of the flat cable 10 is a main surface located on the reference ground conductor 22 side with respect to the signal line 20.
- the reference ground conductor 22 has an opening 29 having a relatively small size. Therefore, in the flat cable 10, the number of lines of electric force directed from the signal line 20 to the battery pack 206 through the opening 29 can be reduced.
- the stray capacitance formed between the signal line 20 and the battery pack 206 is reduced, and the fluctuation of the characteristic impedance of the signal line 20 is suppressed.
- the flat cable 10 and the battery pack 206 can be disposed close to each other.
- the insertion loss can be reduced. More specifically, in the flat cable 10, as shown in FIG. 3, when a current i 1 flows through the signal line 20, a feedback current (countercurrent) i 2 flows through the reference ground conductor 22, and a feedback current ( (Reverse current) i3 flows. In the flat cable 10, the outer edge of the opening 29 and the outer edge of the opening 30 do not overlap when viewed in plan from the z-axis direction. Thereby, the position where the feedback current (countercurrent) i2 flows can be separated from the position where the feedback current (countercurrent) i3 flows.
- the openings provided in both ground conductors have the same shape and overlap in a coincidence state when viewed in plan from the stacking direction. ing. Therefore, if even a slight misalignment occurs when laminating the dielectric body of the high frequency signal line, the two openings will be misaligned. As a result, the area where the two ground conductors face each other varies, and the capacitance formed between the two ground conductors varies. As a result, the characteristic impedance of the signal line varies.
- the opening 29 is accommodated in the opening 30 when viewed in plan from the z-axis direction. Therefore, even if a stacking error occurs when the dielectric body 12 is laminated and a positional relationship between the opening 29 and the opening 30 is shifted, the opening 29 is prevented from protruding from the opening 30. That is, the change in the area where the reference ground conductor 22 and the auxiliary ground conductor 24 face each other is suppressed, and the change in the capacitance formed between the reference ground conductor 22 and the auxiliary ground conductor 24 is suppressed. As a result, fluctuations in the characteristic impedance of the signal line 20 are suppressed.
- FIG. 7 is an exploded view of the dielectric body 12 of the flat cable 10a according to the first modification.
- FIG. 8 is an equivalent circuit diagram when the flat cable 10 a according to the first modification is attached to the battery pack 206.
- the flat cable 10a is different from the flat cable 10 in that it includes a floating conductor 70.
- the floating conductor 70 is provided on the positive side in the z-axis direction with respect to the signal line 20 and is not connected to another conductor.
- the floating conductor 70 overlaps the opening 29 when viewed in plan from the z-axis direction.
- the floating conductor 70 is provided in the opening 29 on the surface of the dielectric sheet 18a on which the reference ground conductor 22 is provided.
- the floating conductor 70 has a rectangular shape smaller than the opening 29 and is not in contact with the reference ground conductor 22.
- the floating conductor 70 is provided in the opening 29, it is possible to suppress unnecessary radiation from being emitted to the outside through the opening 29.
- FIG. 9 is an exploded view of the dielectric body 12 of the flat cable 10b according to the second modification.
- the flat cable 10 b is different from the flat cable 10 in the shape of the signal line 20 and the shapes of the openings 29 and 30. More specifically, tapers are provided at both ends of the openings 29 and 30 in the x-axis direction. That is, the widths of the openings 29 and 30 in the y-axis direction are smaller in the vicinity of both ends in the x-axis direction as they approach both ends in the x-axis direction.
- the line width Wa of the portion that overlaps the openings 29 and 30 in the signal line 20 overlaps the bridge portions 59 and 60 in the signal line 20 when viewed in plan from the z-axis direction. Is larger than the line width Wb. Further, a taper is provided at a portion where the line width of the signal line 20 changes.
- tapers are provided at both ends of the openings 29 and 30 in the x-axis direction, so that the width of the gap between the openings 29 and 30 and the signal line 20 gradually approaches both ends in the x-axis direction. To decrease. Thereby, as the both ends of the openings 29 and 30 in the x-axis direction are approached, the number of magnetic fluxes passing through the gap gradually decreases, and the inductance value of the signal line 20 also gradually decreases. As a result, the fluctuation of the characteristic impedance of the signal line 20 becomes moderate, and the reflection of the high frequency signal in the signal line 20 is suppressed.
- the flat cable 10b it is difficult for a capacitance to be formed between the signal line 20, the reference ground conductor 22, and the auxiliary ground conductor 24 in a portion overlapping the openings 29 and 30 in the signal line 20. Therefore, even if the line width Wa is increased in order to reduce the insertion loss of the signal line 20, the capacitance formed between the signal line 20, the reference ground conductor 22, and the auxiliary ground conductor 24 does not become too large. Thereby, the insertion loss of the flat cable 10b can be reduced while suppressing the fluctuation of the characteristic impedance of the signal line 20.
- the flat cable according to the present invention is not limited to the flat cables 10, 10a, 10b, and can be changed within the scope of the gist thereof.
- the protective layer 14 is formed by screen printing, but may be formed by a photolithography process.
- the length L1 of the opening 29 may be equal to the length L2 of the opening 30 or may be longer than the length L2 of the opening 30.
- the opening 29 may partially protrude from the opening 30 when viewed in plan from the z-axis direction.
- a metal body may be used in place of the battery pack 206.
- Examples of the metal body include a housing and a printed board.
- the present invention is useful for a flat cable, and is particularly excellent in that the thickness can be reduced and the fluctuation of the characteristic impedance can be suppressed.
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Abstract
Description
以下に、本発明の一実施形態に係るフラットケーブルの構成について図面を参照しながら説明する。図1は、本発明の一実施形態に係るフラットケーブル10の外観斜視図である。図2は、図1のフラットケーブル10の誘電体素体12の分解図である。図3は、フラットケーブル10の信号線路20、基準グランド導体22及び補助グランド導体24を積層方向から平面視した図である。図4(a)は、図3のフラットケーブル10のA-Aにおける断面構造図である。図4(b)は、図3のフラットケーブル10のB-Bにおける断面構造図である。以下では、フラットケーブル10の積層方向をz軸方向と定義する。また、フラットケーブル10の長手方向をx軸方向と定義し、x軸方向及びz軸方向に直交する方向をy軸方向と定義する。 (Configuration of flat cable)
Below, the structure of the flat cable which concerns on one Embodiment of this invention is demonstrated, referring drawings. FIG. 1 is an external perspective view of a
以下に、フラットケーブル10の製造方法について図2を参照しながら説明する。以下では、一つのフラットケーブル10が作製される場合を例にとって説明するが、実際には、大判の誘電体シートが積層及びカットされることにより、同時に複数のフラットケーブル10が作製される。 (Flat cable manufacturing method)
Below, the manufacturing method of the
以上のように構成されたフラットケーブル10によれば、薄型化を図ることができる。より詳細には、フラットケーブル10では、基準グランド導体22には開口29が設けられており、補助グランド導体24には開口30が設けられている。これにより、信号線路20と基準グランド導体22及び補助グランド導体24との間に容量が形成されにくくなる。したがって、信号線路20と基準グランド導体22とのz軸方向における距離を小さくし、信号線路20と補助グランド導体24とのz軸方向における距離を小さくしても、信号線路20と基準グランド導体22及び補助グランド導体24との間に形成される容量が大きくなり過ぎない。よって、信号線路20の特性インピーダンスが所定の特性インピーダンス(例えば、50Ω)に調整しやすくなる。その結果、フラットケーブル10によれば、信号線路20の特性インピーダンスを所定の特性インピーダンスに維持しつつ、薄型化を図ることが可能である。 (effect)
According to the
以下に、第1の変形例に係るフラットケーブルの構成について図面を参照しながら説明する。図7は、第1の変形例に係るフラットケーブル10aの誘電体素体12の分解図である。図8は、第1の変形例に係るフラットケーブル10aをバッテリーパック206に貼り付けたときの等価回路図である。 (First modification)
Below, the structure of the flat cable which concerns on a 1st modification is demonstrated, referring drawings. FIG. 7 is an exploded view of the
以下に、第2の変形例に係るフラットケーブルの構成について図面を参照しながら説明する。図9は、第2の変形例に係るフラットケーブル10bの誘電体素体12の分解図である。 (Second modification)
Below, the structure of the flat cable which concerns on a 2nd modification is demonstrated, referring drawings. FIG. 9 is an exploded view of the
本発明に係るフラットケーブルは、フラットケーブル10,10a,10bに限らず、その要旨の範囲内において変更可能である。 (Other embodiments)
The flat cable according to the present invention is not limited to the
12 誘電体素体
18a~18c 誘電体シート
20 信号線路
22 基準グランド導体
24 補助グランド導体
29,30 開口
59,60 ブリッジ部
70 浮遊導体 10, 10a,
Claims (8)
- 複数の誘電体層が積層されてなる誘電体素体と、
前記誘電体素体に設けられている線状の信号線路と、
前記信号線路よりも積層方向の一方側に設けられている第1のグランド導体であって、前記信号線路に沿って並ぶ複数の第1の開口が設けられている第1のグランド導体と、
前記信号線路よりも積層方向の他方側に設けられている第2のグランド導体であって、前記信号線路に沿って並ぶ複数の第2の開口が設けられている第2のグランド導体と、
を備えており、
前記第1のグランド導体と前記信号線路との積層方向における距離は、前記第2のグランド導体と該信号線路との積層方向における距離よりも大きく、
前記第1の開口のサイズは、前記第2の開口のサイズよりも小さいこと、
を特徴とするフラットケーブル。 A dielectric body formed by laminating a plurality of dielectric layers;
A linear signal line provided in the dielectric body;
A first ground conductor provided on one side in the laminating direction from the signal line, the first ground conductor provided with a plurality of first openings arranged along the signal line;
A second ground conductor provided on the other side in the laminating direction from the signal line, the second ground conductor provided with a plurality of second openings arranged along the signal line;
With
The distance in the stacking direction between the first ground conductor and the signal line is larger than the distance in the stacking direction between the second ground conductor and the signal line,
The size of the first opening is smaller than the size of the second opening;
A flat cable characterized by - 前記信号線路が延在している延在方向に直交する直交方向における前記第1の開口の幅は、直交方向における前記第2の開口の幅よりも小さいこと、
を特徴とする請求項1に記載のフラットケーブル。 The width of the first opening in the orthogonal direction orthogonal to the extending direction in which the signal line extends is smaller than the width of the second opening in the orthogonal direction;
The flat cable according to claim 1. - 前記信号線路が延在している延在方向における前記第1の開口の長さは、延在方向における前記第2の開口の長さよりも小さいこと、
を特徴とする請求項1又は請求項2のいずれかに記載のフラットケーブル。 The length of the first opening in the extending direction in which the signal line extends is smaller than the length of the second opening in the extending direction;
The flat cable according to any one of claims 1 and 2. - 積層方向から平面視したときに、前記第1の開口の外縁と前記第2の開口の外縁とは重なっていないこと、
を特徴とする請求項1ないし請求項3のいずれかに記載のフラットケーブル。 When viewed in plan from the stacking direction, the outer edge of the first opening and the outer edge of the second opening do not overlap,
The flat cable according to any one of claims 1 to 3, wherein: - 積層方向から平面視したときに、前記第1の開口は、前記第2の開口内に収まっていること、
を特徴とする請求項1ないし請求項4のいずれかに記載のフラットケーブル。 The first opening is within the second opening when viewed in plan from the stacking direction;
The flat cable according to any one of claims 1 to 4, wherein: - 前記第1のグランド導体は、隣り合う前記第1の開口に挟まれた第1のブリッジ部を有しており、
前記第2のグランド導体は、隣り合う前記第2の開口に挟まれた第2のブリッジ部を有しており、
積層方向から平面視したときに、前記信号線路における前記第1の開口及び前記第2の開口と重なっている部分の線幅は、該信号線路における前記第1のブリッジ部及び前記第2のブリッジ部と重なっている部分の線幅よりも大きいこと、
を特徴とする請求項1ないし請求項5のいずれかに記載のフラットケーブル。 The first ground conductor has a first bridge portion sandwiched between the adjacent first openings,
The second ground conductor has a second bridge portion sandwiched between the adjacent second openings,
When viewed in plan from the stacking direction, the line width of the portion overlapping the first opening and the second opening in the signal line is determined by the first bridge portion and the second bridge in the signal line. Larger than the line width of the part that overlaps the part,
A flat cable according to any one of claims 1 to 5, wherein: - 前記信号線路よりも積層方向の一方側に設けられ、かつ、他の導体と接続されていない浮遊導体であって、積層方向から平面視したときに、前記第1の開口と重なっている浮遊導体を、更に備えていること、
を特徴とする請求項1ないし請求項6のいずれかに記載のフラットケーブル。 A floating conductor that is provided on one side in the stacking direction with respect to the signal line and is not connected to another conductor, and that overlaps the first opening when viewed in plan from the stacking direction Further comprising
The flat cable according to claim 1, wherein: - 前記誘電体素体は可撓性を有していること、
を特徴とする請求項1ないし請求項7のいずれかに記載のフラットケーブル。 The dielectric body has flexibility;
A flat cable according to any one of claims 1 to 7, wherein:
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GB1405547.9A GB2508568B (en) | 2012-07-30 | 2013-06-12 | Flat cable |
US14/262,989 US9130251B2 (en) | 2012-07-30 | 2014-04-28 | Flat cable |
US14/807,925 US9401533B2 (en) | 2012-07-30 | 2015-07-24 | Flat cable |
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- 2013-06-12 WO PCT/JP2013/066211 patent/WO2014020999A1/en active Application Filing
- 2013-06-12 CN CN201510829564.0A patent/CN105551675B/en active Active
- 2013-06-12 CN CN201380003223.7A patent/CN103843077B/en active Active
- 2013-06-12 GB GB1405547.9A patent/GB2508568B/en active Active
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Also Published As
Publication number | Publication date |
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JP5556972B1 (en) | 2014-07-23 |
US20150333388A1 (en) | 2015-11-19 |
US9130251B2 (en) | 2015-09-08 |
GB201405547D0 (en) | 2014-05-14 |
GB2508568A (en) | 2014-06-04 |
JP2014194948A (en) | 2014-10-09 |
US9401533B2 (en) | 2016-07-26 |
CN103843077A (en) | 2014-06-04 |
GB2508568B (en) | 2017-08-30 |
JP5765468B2 (en) | 2015-08-19 |
CN105551675A (en) | 2016-05-04 |
CN103843077B (en) | 2015-12-30 |
CN105551675B (en) | 2017-06-13 |
US20140232488A1 (en) | 2014-08-21 |
JPWO2014020999A1 (en) | 2016-07-21 |
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